Mills



(No Model.) 4 Sheets-Shet 1.

F. HILTON.

APPLIANCE FOR HEATING ROLLS OP ROLLING MILLS. No. 372,621. Patented Nov. 1, 1887.

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PatentdNov. 1, 1887.

F.'HILTON.

(No Model.)

APPLIANCE FOR HEATING ROLLS 0F ROLLING MILLS. No. 372,621.

v (No Model.) I Y 4 Sheets-Sheet 3.

F. HILTON. I APPLIANCE FOR HEATING ROLLS 0P ROLLING MILLS. No. 372,621. Patented Nov. 1, 1887.

"7 \HVWWV WWW/WVWVVWVVVVWW WVE'WWW FRANKLIN HILTON, OF MIDDLESBROUGH'ONTEES, COUNTY OF YORK, ENGLAND.

APPLIANCE FOR HEATING ROLLS OF ROLLING-MILLS.

SPECIFICATION forming part of Letters Patent No. 372,621, dated November 1, 1887. Application filed A; ril 21 1887. Serial Xo. 236,352. (No model.) Patented in Euglandd'uly 17,1886, No. 9,330.

To all whom it may concern.-

Be it known that I, FRANKLIN HIL'roN, a subject of the Queen of Great Britain and Ireland, residing at Middlesbrough-on-Tees, in the county of York, Kingdom of Great Britain and Ireland, have invented Improvements in Rolling-Mills,(which have been patented to me in Great Britain, dated July 17, 1886, No. 9,330,) of which the following is a specification.

Heretofore, in order to heat or warm up the rolls of rollingmills to a proper working temperature,it has been usual to build coal or coke fires underneath the rolls over night,or to place fires or red-hotingots or masses of heated metal upon the fore plates of the rolls in close proximity thereto. These several means of heating or warming up the rolls,however,are open to serious objection. They are liable to cause unequal expansion, owing to the heat being applied only locally. It results that with these means of heating the rolls are frequently in Jared, and in some cases, owing to the unequal expansion, are caused to burst.

The object of my invention is to heat or warm up the rolls to a proper working temperature or maintain them at such a temperature in a regular and uniform manner, which I effect by the application of gas-jets caused to play upon the whole length of the barrel portions of the rolls.

In carrying out this invention two or more lines of gas-jets may be employed, and the jets can be causedto play constantly, whether rolling is being effect-ed or not, the rolls being kept rotating slowly but constantly during the heating or warming process, as usual. One or more lines of jets may be applied midway be tween the pairs of rolls, and be arranged in such a manner that the same can be brought into use only after the usual rest at end of the week, for the purpose of getting up the tern perature in readiness for the commencement of another week s work. In such an arrangement these jets can be quickly connected or disconnected by any suitable means, such as aflexible tube. The number of pipes and their position and arrangement will depend upon the requirements of particular applications, and may be varied within wide limits, so long as there be a slow and uniform application-of heat by gas applied in such a manner that the heat is caused to spread quickly over the en tire surface or length of the rolls, thus obviating unequal expansion.

Referring to the accompanying drawings,

Figure l is an elevation, and Fig. 2 a trans-- verse section, of a rolling-mill provided with apparatus according to this invention for heat ing or warming up the rolls. Y

a and b are the rolls, carried in standards or housings c in the usual manner.

(I d are gas-pipes arranged longitudinally of the rolls, and each provided with burners, nipples, or orifices d (1. These pipes d d are supported at e e, as shown-viz., the pipe for top roll in hole through top riders and the bottom on the standards or housings c. f is a gas-supply pipe in connection with any suitable source of gassupply, and which conveys gas to pipes d d.

\Vhen the apparatus isin use, gasjets from the burners, nipples, or orifices d d play upon the rolls, as indicated, throughout the whole length of their barrel portions.

9 is a similar pipe to (1 cl, with a row of gas burners, nipples. or orifices, g,whence jets can be directed between or near where the rolls meet or nearly meet. Said pipe is connected with the gas-supply pipe byapipe, h, and flexible tube '5 in such manner that it may be readily removed after the rolls have been sufficiently heated to allow rolling operations to be conducted.

Vhile heating the rolls they should be slowly and constantly rotated, in order that heating and expansion thereof may take place uniformly. There may be more pipes such as d and y, if desired.

Figs. 3 and 4 illustrate a modification in which there are four pipes 61 d-that is to say, one at each side of each roll aand b--these pipes being arranged in or approximately in the same horizontal planes as the axes of the rolls. \Vith this arrangement rolling may take place without removing any of the pipes.

\Vhat I claim is- 1. A rolling-mill provided with apparatus for heating or warming up the rolls to aproper working temperature or maintaining them at such a temperature (or both) in a regular and uniform manner by means of gas-jets caused to play upon the whole length of the barrel portions of the rolls.

2. In a rolling-mill, apparatus for heat-ing or warming up the rolls to a proper working temperature or maintaining them at such a temperature, (or both,) comprising gas-supply pipes with two or more lines of burners, nipples, or orifices so arranged that jets may be directed therethrongh so as to play constantly upon the whole length of the barrel portions of the rolls, whether rolling is being effected or not-,and another or other pipe or pipes with one or more lines of burners, nipples, or orifices so arranged that jets may be directed midway, or thereabout, between the pair of rolls, said last'mentioned pipe or pipes being removable, substantially as described.

3. In a rolling-mill, the combination, with rolls a and b and means for supporting and 20 driving same, of the hereinabove-described apparatus,comprising gaspipes d (1, provided with burners, nipples, or orifices d d, supplypipef, removable pipeg, (or pipes,) provided with burners, nipples, or orifices g, for directing gas-jets between said rolls, and gas-supply connections h i to said removable pipe,al1 substantially as described, for the purpose specified.

In testimony whereof I havesigned my name to this specification in the presence of two snb- V scribing witnesses. v

FRANKLIN HILTON.

\Vitnesses:

J AS. L. ADAMS, Hartington Road, -Middlesbrough,

Cleric.

. E. STEVENSON, 19 Clarence Streef, llfiddlesbrough, Solicitors Clerk.

Solicitors 

